Safety-gate for elevators.



Patented July 30, I90I. J. W. FLEMING.

SAFETY GATE FOB ELEVATORS.

(Application filed Mar. 20, 1901.) (No Model.) 2 Sheets-Shaot I.

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SAFETY GATE FOB ELEVATORS (Application filed Max. 20, 1901.) (No Model.)2 Sheen -Sheet 2.

UNTTED STATES PATENT OFFICE.

JOSEPH \V. FLEMING, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-HALETO SAMUEL P. SIPE, OF SAME PLACE.

SAFETY-GATE FOR ELEVATORS.

SPECIFICATION forming part of Letters Patent No. 679,614, dated July 30,1901.

Application filed March 20, 1901- Serial No. 51,976. (No model.)

To all whomv it may concern:

Be it known that I, JOSEPH W. FLEMING, a citizen of the United States,residing in the city and con nty of Philadelphia,State of Pen nsylvania,have invented a new and useful Improvement in Safety-Gates forElevators, of which the following is a specification.

My invention relates to an improvement in elevator-doors, which consistsin constructing the same whereby they are compressible, and havingweights, properly secured thereto, to assist in opening the same, andacting to cause the said doors to close slowly and quietly.

It further consists of novel details of construction, all of which willbe hereinafter set forth.

Figures 1 and 2 represent partial front elevations and partial sectionalviews of an elevator-door and adjuncts embodying my invention, showingthe door in different positions. Fig. 3 represents a partial sideelevation and partial sectional view of a portion of the device. Fig. 4represents a horizontal sectional view of a portion of the mechanism onan enlarged scale. Fig. 5 represents a partial sectional view and apartial side elevation of a portion of the mechanism on an enlargedscale.

Similar letters of reference indicate corresponding parts in thefigures.

Referring to the drawings, A designates an elevator-shaft having theusual floor-openings, and B designates a door for one of the openings,the same consisting of the upper bars 0, which are suitably securedtogether, the ends of which are situated on each side of the angle-ironsI), which latter serve as guides for said bars 0 and are secured to thesides F of the elevator-shaft or other suitable point.

E designates the lower bars of the door B, which are suitably securedtogether and adapted to be guided upon angle-irons D.

G designates lazy-tongs which connect the upper and lower bars 0 and E,and in the sides F are the boxes or ways H and J, in which are situatedthe weights K, L, and M, the said weight K being connected with theupper bars C by means of the cord N or other suitable connection, whichpasses over the double pulleyP and pulley Q,while the weight L isconnected with the lower bars E by means of the cord R or other suitableconnection, which passes over the pulleys P and S, the weight M beingconnected with the weight L for purposes hereinafter explained.

Suitably connected with the lower bars E is a bolt T, which is adaptedto move in the ways U, and has the coiled spring V for holding the samein normal position.

WV designates a bolt which is attached to the Wall of the elevator-shaftand is adapted to move in the ways A and is provided with the coiledspring B and has pivoted thereto a roller 0, the normal position of saidbolt WV being shown in Fig. 4 and in full lines in Fig. 5. The free endof the bolt T is tapered or beveled, as seen in Fig. 4, to allow of theproper relative movements of the bolts T and W.

D designates a projecting plate on the ole vator-oar E.

The cord R is connected to the cross-piece R, that serves also as ahandle by which the door 13 may be raised, as hereinafter eX- plained.

K is a block or stop in the upper portion of the box or way J to limitthe upward movement of the weight K, and consequentlylimits the downwardmovement of the bar 0.

The operation is as follows: When it is desired to enter theelevator-car, the door B is raised by means of the handle R on the lowerbar E, the weights being so arranged as to render this an easy matter,and the door B will assume the position seen in Fig. 2that is, thelazy-tongs will be closed or, in other words, the bars E will be raisedand will travel a greaterdistance comparatively than the bars 0, thebolt T assuming the position slightly above the bolt W, and when theelevator-car, with the plate D, reaches the roller 0 it forces in thebolt WV, which will be beneath the bolt T, as seen in dotted lines inFig. 5, and hold the door in an elevated position. When the bolt T isreleased, the door will doscend rapidly by gravity, carrying with it theweights K and L until the weight M is elevated from the floor or bottomof the way H, which additional weight causes the door to move moreslowly and to close quietly, it being seen that by this construction adoor of the proper height when in closed position can be employed, whileby reason of the lazytongs or compressible means of which the door isconstructed the use thereof is permissible in places where it would beotherwise impossible to use the doors when in their upper position.

It will of course be evident that various changes may be made in theconstruction as herein shown that will come within the spirit of myinvention, and I do not desire to be limited in every instance to theexact form as herein shown and described.

Having thus describedlmy invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a doorfor eleVator-shafts,-upper and lower bars, compressiblemeans connecting the same, a weight secured to the upperbar of said doorand a weight secured to the lower bar of said door, the constructionbeing such that when said door'is elevated the compressible means willbe closed.

2. In a door for elevator-shafts, upper and lower bars, lazy-tongsconnecting the same, a weight secured to the upper bars and weightssecured to the lower bars, whereby when said door is elevated thelazy-tongs will be closed.

3. In a door for elevator-shafts, upper and bolt carried by one of saidbars, and a second bolt operated by the elevator-car for locking saiddoor in raised position.

5. In a door for elevator-shafts, upper and lower bars, lazy-tongsconnecting the same, guides for said bars, weights connected with saidbars, a bolt carried by one of said bars, and a second bolt operated bythe elevatorcar for locking said door in elevated position.

6. In a door for elevator-shafts, upper and lower bars, lazy-tongsconnecting the same, a weight attached to the upper bar, a way in whichsaid weight travels, weights connected with said lower bar,ways in whichsaid weights travel and guides for said bars.

7. In a door for elevator-shafts, upper and lower bars, compressiblemeans connecting the same, a spring-actuated bolt carried by one of saidbars and a spring-actuated bolt secured to the walls of said shaft andadapted to be operated by the car, in order to hold the door in elevatedposition.

8. In a door for elevator-shafts, upper and lower bars connectedtogether, counterbalance-weights connected therewith, and a supplementalweight suspended from one of said weights and adapted to be supported inits way when the door is in its elevated position and brought intoaction as the door approaches its closed position to cause said door toclose slowly.

JOSEPH W. FLEMING.

Witnesses:

JOHN :AQWIEDERSHEIM, WM. (J. WIEDERSHEIM.

